He'd entered the ring with a respectable 16-1 record, seven of which were by knockout. But despite a six-inch reach advantage against his opponent and the genetic predisposition of a former heavyweight champion, Marvis Frazier was likely the only person inside Glens Falls Civic Center on July 26, 1988, who actually thought he stood a chance against a 24-0 "Iron" Mike Tyson.

"It is not a matter of if Mike Tyson knocks out Marvis Frazier," opined boxing commentator Alex Wallau before the fight. "It's just a matter of when."

Tyson went on to earn his 25th victory that night, landing a ferocious uppercut some 20-odd seconds into the bout.

"I knew deep down in my blood that I was going to stop him in the first round," he said with a menacing straight face after the fight. "I'm confident I can beat any fighter in the world."

He almost did. Tyson lost just six professional matches to five opponents before retiring in 2005 and embarking on a very public roller-coaster ride of personal growth and discovery. He's now a vegan, regularly spoofs himself on film (The Hangover, The Hangover Part II), and has even appeared on Celebrity Wife Swap.

"I still got issues with myself," Tyson tells New Times. "But [I am] 100 percent more comfortable with myself now than I was back then."

Written by his wife, Kiki Tyson, Undisputed Truth features the champ speaking openly and honestly about everything from his 1992 rape conviction to the infamous Evander Holyfield ear-biting incident, from failed marriages and financial woes to the tragic death of his 4-year-old daughter in 2009.

"I told [Kiki] my life story, and then she took it from there," he says. "We're very open. I'm very open. I think, from experience, that it doesn't matter how much you love somebody; if you have secrets, it never works."

In fact, Tyson says Undisputed Truth has strengthened his marriage, admitting that the couple's relationship is built on a strong foundation of honesty.

"She'd say, 'You did what?' and laugh, but wouldn't give me a dirty look or anything like that. We're married now. I already did it, so what?"